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Related Concept Videos

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
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Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
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Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
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Microsecond pulsed glow discharge as an analytical spectroscopic source.

W Hang1, W O Walden, W W Harrison

  • 1Department of Chemistry, University of Florida, Gainesville, Florida 32611.

Analytical Chemistry
|May 31, 2011
PubMed
Summary

Pulsed glow discharge in the microsecond range improves solid sample analysis. This method enhances analytical signals and provides diagnostic insights into glow discharge processes.

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Area of Science:

  • Analytical Chemistry
  • Atomic Spectroscopy
  • Plasma Physics

Background:

  • Glow discharge is a versatile technique for elemental analysis of solids.
  • Traditional glow discharges may have limitations in sensitivity and diagnostic capabilities.

Purpose of the Study:

  • To investigate the advantages of pulsed glow discharge for solid sample analysis.
  • To evaluate spectroscopic responses using various techniques.
  • To explore diagnostic information obtainable from this discharge type.

Main Methods:

  • Utilized a pulsed glow discharge operating in the microsecond regime.
  • Employed atomic emission, absorption, and fluorescence spectroscopies.
  • Applied mass spectrometry for elemental and isotopic analysis.
  • Examined diagnostic parameters of the discharge.

Main Results:

  • Demonstrated enhanced analytical response efficiency for sputtered sample atoms.
  • Observed improved signal-to-noise ratios in spectroscopic measurements.
  • Acquired valuable diagnostic data regarding the pulsed glow discharge plasma.
  • Confirmed the suitability for elemental and isotopic characterization of solids.

Conclusions:

  • Pulsed glow discharge offers significant advantages for solid sample analysis.
  • The technique provides enhanced sensitivity and diagnostic capabilities.
  • It represents a promising advancement in atomic spectrometry and plasma diagnostics.